加载组合框数据源

Question

所以我想使用一个函数为组合框加载数据源，该函数以字符串形式接收它需要加载的数据源的名称，然后让它加载它，但是我无法得到这个工作，因为我认为程序只是试图加载变量名而不是它代表的数据源。抱歉，如果措辞不当，希望我的代码能说明我的意思。

我现在就是这样做的

    bool TeamPlayers(string teamName, ComboBox team)//Makes the players of the selected team available for selection as scorers
    {
        if (teamName == "Canada")
        {
            string[] players = {"Johny Moonlight", "DTH Van Der Merwe", "Phil Mackenzie" };
            team.DataSource = players;
        }
        else if (teamName == "New Zealand")
        {
            string[] players = {"Dan Carter", "Richie Mccaw", "Julian Savea" };
            team.DataSource = players;
        }
        else if (teamName == "South Africa")
        {
            string[] players = {"Jean de Villiers", "Bryan Habana", "Morne Steyn" };
            team.DataSource = players;
        }
        return (true);
    }

但我想做更多这样的事情

    bool TeamPlayers(string teamName, ComboBox team)//Makes the players of the selected team available for selection as scorers
    {
        string[] Canada = {"Johny Moonlight", "DTH Van Der Merwe", "Phil Mackenzie" };
        string[] NZ = {"Dan Carter", "Richie Mccaw", "Julian Savea" };
        string[] RSA = {"Jean de Villiers", "Bryan Habana", "Morne Steyn" };
        team.DataSource = teamName;
        return (true);
    }

其中 teamName 将是 Canada、NZ 或 RSA。有谁知道我可以这样做的方法吗？

Answer 1

你可以像这样制作字典：

dict<string, string[]> teamPlayers;

键是队名，值是球员。

team.DataSource = teamPlayers[teamName];

Answer 2

您可以使用字典来实现类似的功能

bool TeamPlayers(string teamName, ComboBox team)//Makes the players of the selected team available for selection as scorers
{
    Dictionary<string, string[]> teamNames = new Dictionary<string, string[]>();

    teamNames.Add("Canada", new string[] { "Johny Moonlight", "DTH Van Der Merwe", "Phil Mackenzie" });
    teamNames.Add("New Zealand", new string[] { "Dan Carter", "Richie Mccaw", "Julian Savea" });
    teamNames.Add("South Africa", new string[] { "Jean de Villiers", "Bryan Habana", "Morne Steyn" });

    team.DataSource = teamNames[teamName];
    return (true);
}

Answer 3

制作团队名称词典。

Dictionary<string, string[]> teams = new Dictionary<string, string[]>();

public void PopulateTeams()
{
    teams.Add("canada", new[] { "Johny Moonlight", "DTH Van Der Merwe", "Phil Mackenzie" });
    teams.Add("nz", new[] { "Dan Carter", "Richie Mccaw", "Julian Savea" });
    teams.Add("rsa", new[] { "Jean de Villiers", "Bryan Habana", "Morne Steyn" });
}

字典的用法：

private bool TeamPlayers(string teamName, ComboBox team)
{
    team.DataSource = null;
    if (teams.ContainsKey(teamName))
    {
        team.DataSource = teams[teamName];
        return true;
    }
    return false;
}

加载组合框数据源

Loading a combo box data source

c#

combobox

datasource